To solve a problem in a gas cooking appliance wherein when a heated container is heated by a gas burner, a large gap is inevitably generated between the gas burner and the heated container, and thus, heat release caused by combustion of the gas burner cannot be prevented, leading to warming of outside due to heat release by combustion of the gas burner and decline in thermal efficiency with respect to the heated container.

A heat release prevention device is mounted between a heated container and a gas burner. The device prevents warming of outside by combustion of the gas burner and improves thermal efficiency with respect to the heated container, to contribute to resource saving.